HoneyFlap

Flappy-Bird-style game on the SugarCraft stack — port of kbrgl/flapioca. The bird's vertical motion is a HoneyBounce projectile (gravity + an upward velocity kick on each tap), pipes scroll left at a fixed cell rate, collision is per-cell.

Run it

composer install
./bin/honey-flap

Keys

Key	Action
Space / ↑ / w	Flap
r	Restart
q / Esc	Quit

Architecture

File	Role
Bird	Wraps a HoneyBounce Projectile — gravity pulls it down, flap() resets vertical velocity to a fixed kick.
Pipe	Single-column pipe pair with a centred gap. Slides left one cell per tick.
TickMsg	Frame-tick message scheduled by Cmd::tick(0.033, …) ≈ 30 fps.
Game (Model)	Pure-state world: bird + pipes + score + crashed flag. Injects PRNG closure for deterministic gap placements in tests.
Renderer	Pure view — single playfield walk, ANSI-styled glyphs, rounded border.
PipeGenerator	Generates pipes with variable gap height — gap shrinks as score increases, raising difficulty. Gap starts at 6 cells, shrinks by 1 every 5 points, floors at 3.

The PRNG is injected as a Closure(int $maxInclusive): int so unit tests can pin the pipe layout to a specific sequence — the standard SugarCraft pattern.

Difficulty scaling

The pipe gap height adapts to the player's score:

Score range	Gap height
0–4	6 cells
5–9	5 cells
10–14	4 cells
15+	3 cells

Gap shrinks by 1 every 5 points, bottoming out at 3 cells to keep the game playable. This is implemented by PipeGenerator::gapHeightForScore() and applied automatically when Game spawns new pipes via PipeGenerator::makePipe().

Test

composer install
vendor/bin/phpunit